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Finding the Fourth Proportional to 449.86, 620.85 and 325.93

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Solution

The fourth proportional to 449.86, 620.85 and 325.93 is: 449.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    449.86 : 620.85 = 325.93 : x
  2. Step 2: Convert to fraction form
    449.86/620.85 = 325.93/x
  3. Step 3: Cross multiply
    449.86x = 620.85 × 325.93
  4. Step 4: Simplify right side
    449.86x = 202,353.64
  5. Step 5: Solve for x
    x = 202,353.64/449.86
  6. Step 6: Final answer
    x = 449.81

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.